LB1684 Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
Lista de partido
LB1684 Datasheet PDF : 4 Pages
| |||
Truth Table
LB1684
Pin Description
Pin name
UIN1, UIN2
VIN1, VIN2
WIN1, WIN2
UOUT
VOUT
WOUT
VCC1
Pin No.
13, 14
15, 16
17, 18
3
2
1
4
VCC2
19
Rf
20
CD
10
STOP
9
FCU
5
FCV
6
FCW
7
VC
11
GND
8
F/R
12
Description
U phase Hall element input pin. High of logic : VIN1>VIN2
V pahse Hall element input pin. High of logic : VIN1>VIN2
W pahse Hall element input pin. High of logic : VIN1>VIN2
U phase output pin
V phase output pin
W phase output pin
Power supply pin for applying output
Power supply pin for applying voltage to each section other than output section. The control point of control voltage
is at approximately 1/2 of this voltage.
This voltage must be stabilized to be free from ripple, noise, etc.
Output current detect pin. By connectiong Rf across this pin and GND pin, output current is detected as voltage.
Pin for fetching current (voltage) detected with Rf.
By connecting a resistor across CD pin and Rf pin, speed control start votlage can be fine-adjusted.
Overcurrent protection pin.
Voltage being lower than that on CD pin is taken to be identical to overcurrent flow, causing output to be cut off. For
example, if STOP pin is set to 1.5V for Rf=1Ω, approximately 1.5A or more flows at output, causing output to be cut
off.
Ferquency characteristic compensation pin.
Closed-loop oscillation in curent-controlled system (including motor, F-V converter) is stopped.
Speed/phase control pin.
Control starts at approximately 1/2 of VCC2. Control is of current-controlled type that controls output current.
For Rf=1Ω, LB1684 closed-loop has gm=0.44A/V typ, which can be adjusted by varying Rf.
GND for other than output.
Minimum potential ot current transistor is at Rf pin.
Forward/reverse control pin.
By setting this pin to high (more than 2.0V)/low (less than 0.3V), truth value is changed to perform forward/reverse
rotation.
No.3381-3/4
Share Link: 